Late Gadolinium Enhancement of the right ventricular myocardium
... is more pronounced in the spatial dimension encoded at lower spatial resolution, which is usually the phaseencoding direction. The dark rim artifacts in LGE imaging are remarkably regular and evenly distributed in all dimensions (Figures 2, 3, 4, 5, 7, 8, 9, 10). They most likely represent partial v ...
... is more pronounced in the spatial dimension encoded at lower spatial resolution, which is usually the phaseencoding direction. The dark rim artifacts in LGE imaging are remarkably regular and evenly distributed in all dimensions (Figures 2, 3, 4, 5, 7, 8, 9, 10). They most likely represent partial v ...
Program Book Containing Slides (20
... Founder of StopAfib.org, Author, Survivor, and Patient Advocate Following a brush with death in emergency heart surgery, and a subsequent close call with a stroke due to atrial fibrillation, Mellanie True Hills vowed to help others avoid heart disease and stroke. She founded the non-profit American ...
... Founder of StopAfib.org, Author, Survivor, and Patient Advocate Following a brush with death in emergency heart surgery, and a subsequent close call with a stroke due to atrial fibrillation, Mellanie True Hills vowed to help others avoid heart disease and stroke. She founded the non-profit American ...
Atrial Fibrillation Ablation (English)
... fibrillation electrical impulses or signals come from many different areas within the right atrium and left atrium (upper chambers), especially the pulmonary veins. These signals are disorganized and rapid. This causes your heart to beat fast and unevenly. ...
... fibrillation electrical impulses or signals come from many different areas within the right atrium and left atrium (upper chambers), especially the pulmonary veins. These signals are disorganized and rapid. This causes your heart to beat fast and unevenly. ...
Restricting Excessive Cardiac Action Potential and QT Prolongation
... L-735,821, or HMR-1556 produces little effect on action potential duration (APD) in isolated rabbit and dog ventricular myocytes, the effect of IKs block on normal human ventricular muscle APD is not known. Therefore, studies were conducted to elucidate the role of IKs in normal human ventricular mu ...
... L-735,821, or HMR-1556 produces little effect on action potential duration (APD) in isolated rabbit and dog ventricular myocytes, the effect of IKs block on normal human ventricular muscle APD is not known. Therefore, studies were conducted to elucidate the role of IKs in normal human ventricular mu ...
Basic ECG Theory, 12-Lead Recordings and Their Interpretation
... dipole ends. The amplitude of the signal is proportional to the mass of the tissue involved in creating that dipole at any given time. Typically, one employs electrodes on the surface of the skin to detect the voltage of this electrical field, which gives rise to the ‘‘electrocardiogram.’’ It is imp ...
... dipole ends. The amplitude of the signal is proportional to the mass of the tissue involved in creating that dipole at any given time. Typically, one employs electrodes on the surface of the skin to detect the voltage of this electrical field, which gives rise to the ‘‘electrocardiogram.’’ It is imp ...
7 The Pericardium
... significant difference in right ventricular performance associated with the effects of the pericardium. However, given the pericardial and chamber interactions, no attempt to separate or isolate the primary vs secondary pericardium effects on each chamber can be independently done. In a study by our ...
... significant difference in right ventricular performance associated with the effects of the pericardium. However, given the pericardial and chamber interactions, no attempt to separate or isolate the primary vs secondary pericardium effects on each chamber can be independently done. In a study by our ...
What Is the Optimal Serum Potassium Level in Cardiovascular
... (33). The catecholamine surge that accompanies acute myocardial infarction (AMI) causes redistributional hypokalemia and hyperpolarizes non-ischemic myocardium, producing electrical inhomogeneity and ventricular arrhythmias. Potassium repletion abolishes these effects (34). Clinical observations sug ...
... (33). The catecholamine surge that accompanies acute myocardial infarction (AMI) causes redistributional hypokalemia and hyperpolarizes non-ischemic myocardium, producing electrical inhomogeneity and ventricular arrhythmias. Potassium repletion abolishes these effects (34). Clinical observations sug ...
Right ventricular ejection fraction response to exercise in
... between contracting and noncontracting regions of the pulmonary outflow tract. A para-left ventricular background region of interest was chosen, 3 to 5 picture elements wide, separated by one picture element from left ventricular activity. Right ventricular ejection fraction was calculated as backgr ...
... between contracting and noncontracting regions of the pulmonary outflow tract. A para-left ventricular background region of interest was chosen, 3 to 5 picture elements wide, separated by one picture element from left ventricular activity. Right ventricular ejection fraction was calculated as backgr ...
Cardiac patterning and morphogenesis in zebrafish
... the ventricular defects in gata5, fgf8, and Zoep mutants are secondary to the loss of nkx2.5 expression. It is interesting to note that all mutants known to have vmhc expression defects also have problems with myocardial differentiation in general. han, fau, ace, and Zoep mutants exhibit reduced num ...
... the ventricular defects in gata5, fgf8, and Zoep mutants are secondary to the loss of nkx2.5 expression. It is interesting to note that all mutants known to have vmhc expression defects also have problems with myocardial differentiation in general. han, fau, ace, and Zoep mutants exhibit reduced num ...
Rectilinear Biphasic Defibrillation
... 14 M Series Operator’s Guide, Rectilinear Biphasic Waveform Defibrillator Option Insert, 9650-0209-01:4-5. For defibrillation of VF. “... data also demonstrate the superior efficacy of low-energy rectilinear biphasic shocks in patients with high transthoracic impedance at 90%** confidence level. **K ...
... 14 M Series Operator’s Guide, Rectilinear Biphasic Waveform Defibrillator Option Insert, 9650-0209-01:4-5. For defibrillation of VF. “... data also demonstrate the superior efficacy of low-energy rectilinear biphasic shocks in patients with high transthoracic impedance at 90%** confidence level. **K ...
Assessment of Left Ventricular Function in Juvenile Rheumatoid
... population of outpatients affected by rheumatoid arthritis [17]. This finding was also ascertained that RA patients were more likely to have abnormal echocardiographic parameters of diastolic dysfunction -in the meta-analysis review for echocardiographic evaluation of asymptomatic patients affected ...
... population of outpatients affected by rheumatoid arthritis [17]. This finding was also ascertained that RA patients were more likely to have abnormal echocardiographic parameters of diastolic dysfunction -in the meta-analysis review for echocardiographic evaluation of asymptomatic patients affected ...
Abnormal electrocardiographic findings in athletes
... wall thickness and does not in itself require additional evaluation.5 6 As expected, voltage criteria for LVH also are commonly identified in individuals with HCM. However, the presence of isolated increased QRS voltage in the absence of other ECG abnormalities is uncommon and present in <2% of indiv ...
... wall thickness and does not in itself require additional evaluation.5 6 As expected, voltage criteria for LVH also are commonly identified in individuals with HCM. However, the presence of isolated increased QRS voltage in the absence of other ECG abnormalities is uncommon and present in <2% of indiv ...
Tei Index - Hellenic Journal of Cardiology
... more sensitive in the detection of LV dysfunction and of the rate of heart failure development.41 In the late post-infarct phase, the sensitivity of the index is higher than that of ejection fraction in patients with an adverse outcome.37 The superiority of the Tei index is attributed to its ability ...
... more sensitive in the detection of LV dysfunction and of the rate of heart failure development.41 In the late post-infarct phase, the sensitivity of the index is higher than that of ejection fraction in patients with an adverse outcome.37 The superiority of the Tei index is attributed to its ability ...
Can prolonged exercise-induced myocardial ischaemia be
... the continuous supervision of at least one of the two study exercise specialists. The exercise sessions consisted of a brief warm-up period of light intensity (5–10 min) followed by endurance exercise (20–60 min) on a stationary ergocycle (Monark 878, Vansbro, Sweden) under continuous ECG monitoring ...
... the continuous supervision of at least one of the two study exercise specialists. The exercise sessions consisted of a brief warm-up period of light intensity (5–10 min) followed by endurance exercise (20–60 min) on a stationary ergocycle (Monark 878, Vansbro, Sweden) under continuous ECG monitoring ...
Cardiopulmonary Exercise Testing in Patients With Left Bundle
... cardiopathies, seems to be a slow progression marker of degenerative cardiac diseases, ischemic or not, affecting the myocardial conduction system and contractile performance.1 LBBB can induce cardiomyopathy since individuals with this condition, when submitted to cardiac resynchronization therapy, ...
... cardiopathies, seems to be a slow progression marker of degenerative cardiac diseases, ischemic or not, affecting the myocardial conduction system and contractile performance.1 LBBB can induce cardiomyopathy since individuals with this condition, when submitted to cardiac resynchronization therapy, ...
Growth differentiation factor-15 (GDF
... manifestation of many cardiovascular diseases, such as rheumatic heart disease, coronary heart disease, hypertension, cardiomyopathy, congenital heart disease, pericardial diseases and other cardiovascular disease [1-3]. AF can seriously affect human health, in addition, which could cause serious ca ...
... manifestation of many cardiovascular diseases, such as rheumatic heart disease, coronary heart disease, hypertension, cardiomyopathy, congenital heart disease, pericardial diseases and other cardiovascular disease [1-3]. AF can seriously affect human health, in addition, which could cause serious ca ...
Right Ventricular Volume Determinations in 18 Patients
... SUMMARY Right ventricular growth was assessed angiocardiographically in 18 patients with pulmonary atresia, intact ventricular septum, and hypoplastic and hypertensive right ventricle. A variety of surgical procedures were performed. In only 12 patients (66.7%) was right ventricular-pulmonary artery ...
... SUMMARY Right ventricular growth was assessed angiocardiographically in 18 patients with pulmonary atresia, intact ventricular septum, and hypoplastic and hypertensive right ventricle. A variety of surgical procedures were performed. In only 12 patients (66.7%) was right ventricular-pulmonary artery ...
Arrhythmogenesis by single ectopic beats originating in the Purkinje
... 2010; doi:10.1152/ajpheart.01237.2009.—Cells in the Purkinje system (PS) are known to be more vulnerable than ventricular myocytes to secondary excitations during the action potential (AP) plateau or repolarization phases, known as early afterdepolarizations (EADs). Since myocytes have a lower intri ...
... 2010; doi:10.1152/ajpheart.01237.2009.—Cells in the Purkinje system (PS) are known to be more vulnerable than ventricular myocytes to secondary excitations during the action potential (AP) plateau or repolarization phases, known as early afterdepolarizations (EADs). Since myocytes have a lower intri ...
Management of Atrial Fibrillation
... heart disease, hypertension, diabetes or previous stroke. This is a diagnosis of exclusion and requires completely normal blood tests and a normal echocardiogram. Patients with lone AF are usually younger and are likely to present with paroxysmal rather than persistent or chronic AF. The next impor ...
... heart disease, hypertension, diabetes or previous stroke. This is a diagnosis of exclusion and requires completely normal blood tests and a normal echocardiogram. Patients with lone AF are usually younger and are likely to present with paroxysmal rather than persistent or chronic AF. The next impor ...
Chapter 29
... In every routine equipment check, the EMT should ensure that the proper accessory supplies are with the AED. Most AEDs used by EMTs are equipped with a case that has several pockets used to hold additional supplies that may be needed. It is always advisable to have a spare set of electrode pads as w ...
... In every routine equipment check, the EMT should ensure that the proper accessory supplies are with the AED. Most AEDs used by EMTs are equipped with a case that has several pockets used to hold additional supplies that may be needed. It is always advisable to have a spare set of electrode pads as w ...
Effects of Physiologic Pacing versus Ventricular Pacing on the Risk
... defined as a focal neurologic deficit of sudden onset, such as would be expected with occlusion of one of the major cerebral arteries, which did not resolve within 24 hours. If a patient had more than one stroke, only the first was counted. The secondary outcome events were death from any cause, doc ...
... defined as a focal neurologic deficit of sudden onset, such as would be expected with occlusion of one of the major cerebral arteries, which did not resolve within 24 hours. If a patient had more than one stroke, only the first was counted. The secondary outcome events were death from any cause, doc ...
Pacemaker Therapy in Atrial Fibrillation
... the patient pacer-dependent for life. Second, it does not obviate the need for anticoagulation [3-5]. Third, right ventricular (RV) pacing has been shown to induce ventricular dyssynchrony and may worsen Left Ventricular (LV) function and mitral regurgitation in patients with LV systolic dysfunction ...
... the patient pacer-dependent for life. Second, it does not obviate the need for anticoagulation [3-5]. Third, right ventricular (RV) pacing has been shown to induce ventricular dyssynchrony and may worsen Left Ventricular (LV) function and mitral regurgitation in patients with LV systolic dysfunction ...
PACES/HRS Expert Consensus Statement on the Evaluation and
... (HRS) formed a writing committee to address this lack and propose expert consensus guidelines. Selected members from within PACES and HRS have reviewed and analyzed the published scientific literature, carefully assessing the absolute and relative risks of diagnostic and therapeutic procedures so as ...
... (HRS) formed a writing committee to address this lack and propose expert consensus guidelines. Selected members from within PACES and HRS have reviewed and analyzed the published scientific literature, carefully assessing the absolute and relative risks of diagnostic and therapeutic procedures so as ...
View/Open
... where Ea is the negative value of the slope of the diagonal line connecting the end-systolic pressurevolume point and the end-diastolic point on the volume axis (Fig.1). The ratio Ea / Emax represents ventriculoarterial coupling. When effective arterial elastance equals ventricular elastance, that i ...
... where Ea is the negative value of the slope of the diagonal line connecting the end-systolic pressurevolume point and the end-diastolic point on the volume axis (Fig.1). The ratio Ea / Emax represents ventriculoarterial coupling. When effective arterial elastance equals ventricular elastance, that i ...
Improved Regional Myocardial Blood Flow, Left Ventricular Assist
... Background. It has been suggested that left ventricular unloading at the time of reperfusion provides superior infarct salvage over reperfusion alone. The purpose of this study was to show that the Hemopump transvalvular axial-flow left ventricular assist device provides superior left ventricular un ...
... Background. It has been suggested that left ventricular unloading at the time of reperfusion provides superior infarct salvage over reperfusion alone. The purpose of this study was to show that the Hemopump transvalvular axial-flow left ventricular assist device provides superior left ventricular un ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.